The Heat Fund was implemented in order to support the production of heat from renewable resources and recovered energy. This system of support for investment is one of the commitments of the Grenelle Environment Forum.The Heat Fund's goal is to support 5.5 Mtoe production of renewable heat between 2009 and 2020; this number represents more than a quarter of the renewable energy production target of 20 Mtoe by 2020 set by the Grenelle Environment Forum.The Heat Fund mainly supports the development of the use of biomass (forestry, agriculture, production and thermal recovery of biogas, etc.), geothermal energy, heat pumps and solar thermal. The targetted sectors are collective housing, tertiary, agriculture and industry. By encouraging the use of renewable energy by heating networks, the Heat Fund will also have an important social impact (reduction and stabilisation of heating bills of essentially social housing) and directly encourage overall diversification of the energy supply.The Heat Fund intervention methods are:- for large scale biomass facilities (production of renewable heat greater than 1 000 toe/year) in the industrial, agricultural and tertiary sectors: there is an annual national call for projects. Four calls for projects have been already launched and a fifth one will be launched in September 2012.- for all other sectors (including residential), and for biomass facilities between 100 and 1000 toe/year, the Heat Fund is managed by the ADEME at regional level with regional calls for projects. It complements aid currently granted in the context of State-Region Project Contracts.